/**
 * BibSonomy-Webapp - The web application for BibSonomy.
 *
 * Copyright (C) 2006 - 2016 Knowledge & Data Engineering Group,
 *                               University of Kassel, Germany
 *                               http://www.kde.cs.uni-kassel.de/
 *                           Data Mining and Information Retrieval Group,
 *                               University of Würzburg, Germany
 *                               http://www.is.informatik.uni-wuerzburg.de/en/dmir/
 *                           L3S Research Center,
 *                               Leibniz University Hannover, Germany
 *                               http://www.l3s.de/
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.bibsonomy.webapp.util.spring.security.exceptionmapper;

import static org.bibsonomy.util.ValidationUtils.present;

import org.bibsonomy.model.User;
import org.bibsonomy.webapp.util.spring.security.exceptions.LdapUsernameNotFoundException;
import org.springframework.ldap.core.DirContextOperations;
import org.springframework.security.core.userdetails.UsernameNotFoundException;

/**
 * @author rja
 */
public class LdapUsernameNotFoundExceptionMapper extends UsernameNotFoundExceptionMapper {

	@Override
	public boolean supports(final UsernameNotFoundException e) {
		return present(e) && LdapUsernameNotFoundException.class.isAssignableFrom(e.getClass());
	}

	@Override
	public User mapToUser(final UsernameNotFoundException e) {
		final User user = new User();
		if (e instanceof LdapUsernameNotFoundException) {
			final DirContextOperations ctx = ((LdapUsernameNotFoundException) e).getDirContextOperations();
	
			/*
			 * copy user attributes
			 */
			user.setRealname(ctx.getStringAttribute("givenname") + " " + ctx.getStringAttribute("sn"));
			user.setEmail(ctx.getStringAttribute("mail"));
			user.getSettings().setDefaultLanguage(ctx.getStringAttribute("preferredlanguage"));
			user.setPlace(ctx.getStringAttribute("l")); // location
			user.setLdapId(ctx.getStringAttribute("uid"));
			user.setToClassify(0);

			/*
			 * After successful registration the user is logged in using the
			 * plain text password. Thus, we store it here in the user. 
			 */
			final Object credentials = e.getAuthentication().getCredentials();
			if (credentials instanceof String) {
				user.setPassword((String) credentials);
			}
		}

		return user;
	}

}
